This chapter argues that the samurai were “invented” in the Tokugawa period as a strictly defined group with a unique identity created through popular culture and codified social cultural practices. Commoners and samurai alike consumed, and participated in, warrior-related activities. People read warrior histories, military science manuals, were influenced by warrior theatre, like the 47 ronin story, and the value therein. It also describes how low-ranking warriors became more political, their education increasing connected to notions of warrior legitimacy and the relationship between warriors and the imperial institution. In so doing, the chapter, chronologically, leads readers to the collapse of the last warrior regime during the Meiji Restoration and the Boshin War.